Da Nang beat Song Lam Nghe An (SLNA) 1-0 on Thursday to top Group B at the 16th edition of the Thanh Nien-sponsored U21 National Football Championship in Ninh Thuan.
After their wins over Dong Thap and hosts Ninh Thuan respectively in their openers, both Da Nang and SLNA played more defensive than attacking football.
Evenly matched for most of the match, the deadlock was only broken after Da Nang's Giang Tran Quach Tan came off the bench to score just five minutes from full time.
This made for a more dramatic game in the final minutes with SLNA launching more attacks but failing to score.
In the other Group B match on Thursday, hosts Ninh Thuan upset Dong Thap 2-1 to keep alive their hopes of advancing to the semifinals. Ninh Thuan People's Committee's Chairman Vo Dai promised to award the team VND100 million for their significant win.
In the final group stage matches, Da Nang only need to draw with hosts Ninh Thuan to stay atop while SLNA need a win against Dong Thap to advance to the semifinals.